<script setup lang="ts">
import { createEnterpriseAPI, editEnterpriseAPI, getEnterpriseAPI, getIndustryListAPI } from '@/apis/enterprise';
import type { EnterpriseParams, Industry } from '@/types/enterprise';
import { ref } from 'vue';
import { uploadAPI } from '@/apis/common';
import { ElMessage, type FormInstance, type FormRules, type UploadRawFile, type UploadRequestOptions, type UploadUserFile } from 'element-plus';
import { CircleCheck, Upload } from '@element-plus/icons-vue'
import { useRoute, useRouter } from 'vue-router';

const router = useRouter()
const route = useRoute()

// 表单组件实例，用于 表单整体校验 和 表单重置
const formRef = ref<FormInstance>()

// 根据接口文档定义字段, 添加企业所需参数
const addForm = ref<EnterpriseParams>({
  name: '', // 企业名称
  legalPerson: '', // 法人
  registeredAddress: '', // 注册地址
  industryCode: undefined, // 所在行业
  contact: '', // 企业联系人
  contactNumber: '', // 联系人电话
  businessLicenseUrl: '', // 营业执照url
  businessLicenseId: undefined // 营业执照id
})

// 获取行业列表 --------------------------------
const industryList = ref<Industry[]>([]) // 行业列表
const getIndustryList = async () => {
  const res = await getIndustryListAPI()
  industryList.value = res.data
}
getIndustryList()

const fileList = ref<UploadUserFile[]>([]) // 营业执照列表
// 自定义上传营业执照请求
const onUploadRequest = async (options: UploadRequestOptions) => {
  // 1. 准备 FormData 对象
  const fd = new FormData()
  // 2. 根据后端要求准备字段
  fd.append('file', options.file)
  fd.append('type', 'businessLicense')
  // 3. 调用接口上传文件
  const res = await uploadAPI(fd)

  // 单独校验表单，如果校验成功，自动清除错误信息
  addForm.value.businessLicenseUrl = res.data.url
  addForm.value.businessLicenseId = res.data.id
  formRef.value?.validateField('businessLicenseUrl')

  // return 图片路径，存储到 fileList 的 response 中
  return res.data.url
}
// 上传营业执照校验
const beforeUpload = (file: UploadRawFile) => {
    const allowImgType = ['image/jpeg', 'image/png', 'image/jpg'].includes(file.type)
    const isLt5M = file.size / 1024 / 1024 < 5
  
    if (!allowImgType) {
      ElMessage.error('上传营业执照图片只能是 PNG/JPG/JPEG 格式!')
    }
    if (!isLt5M) {
      ElMessage.error('上传营业执照图片大小不能超过 5MB!')
    }
    return allowImgType && isLt5M
}

// 删除营业执照
const removeUpload = () => {
  addForm.value.businessLicenseUrl = ''
  addForm.value.businessLicenseId = undefined
  // 单独校验表单
  formRef.value?.validateField('businessLicenseUrl')
}

// 表单校验
const addRules = ref<FormRules<EnterpriseParams>>({
    name: [
    { required: true, message: '请输入企业名称', trigger: 'blur' },
    { min: 2, max: 20, message: '请输入2-20位企业名称', trigger: 'blur' }
  ],
  legalPerson: [
    { required: true, message: '请输入法人', trigger: 'blur' },
    { min: 2, max: 20, message: '请输入2-20位法人', trigger: 'blur' }
  ],
  registeredAddress: [
    { required: true, message: '请输入注册地址', trigger: 'blur' },
  ],
  industryCode: [
    { required: true, message: '请选择行业', trigger: 'change' }
  ],
  contact: [
    { required: true, message: '请输入企业联系人', trigger: 'blur' },
    { min: 2, max: 20, message: '请输入2-20位企业联系人', trigger: 'blur' }
  ],
  contactNumber: [
    { required: true, message: '请输入联系电话', trigger: 'blur' },
    { pattern: /^1[3-9]\d{9}$/, message: '请输入正确的手机号', trigger: 'blur' }
  ],
  businessLicenseUrl: [
    { required: true, message: '请上传营业执照', trigger: 'blur' }
  ]
})

// 加载状态按钮(禁用提交，避免重复提交)
const submitLoading = ref(false)
// 确认提交
const onSubmit = async () => {
  try {
    // 表单提交前，统一校验
    await formRef.value?.validate()
    // 把按钮设置为加载状态
    submitLoading.value = true

    // 判断是添加还是编辑
    if (!route.params.id) {
      // 添加企业 ---------
      await createEnterpriseAPI(addForm.value)
      // 轻提示
      ElMessage.success("添加成功")
    } else {
      // 编辑企业 ---------
      const res = await editEnterpriseAPI({ ...addForm.value, id: enterpriseId.value! })
      // 轻提示
      if(res.code === 10000) {
        ElMessage.success('编辑成功')
      } else {
        ElMessage.error(res.msg)
      }
    }

    // 返回上一页
    router.back();
  } catch {
    // 提交失败-恢复按钮状态
    submitLoading.value = false
  }
}

// 重置表单
const onReset = () => {
  formRef.value?.resetFields()
  fileList.value = []
}

const enterpriseId = ref<number>() // 企业id -----------
// 编辑页面回显数据
const initData = async () => {
  try {
    const res = await getEnterpriseAPI(route.params.id as string)
    addForm.value.name = res.data.name
    addForm.value.legalPerson = res.data.legalPerson
    addForm.value.registeredAddress = res.data.registeredAddress
    addForm.value.industryCode = res.data.industryCode
    addForm.value.contact = res.data.contact
    addForm.value.contactNumber = res.data.contactNumber
    addForm.value.businessLicenseUrl = res.data.businessLicenseUrl
    addForm.value.businessLicenseId = res.data.businessLicenseId
    fileList.value = [{ url: res.data.businessLicenseUrl, name: 'businessLicense' }]
    enterpriseId.value = res.data.id
  } catch (error) {
    // 企业不存在，返回上一页
    setTimeout(() => {
      router.back()
    }, 1000)
  }
}

if (route.params.id) {
  initData()
}

</script>

<template>
  <div class="add-enterprise">
    <header class="add-header">
      <el-page-header :content="!$route.params.id ? '添加企业' : '编辑企业'" @back="$router.back()" />
    </header>
    <main class="add-main">
      <div class="form-container">
        <div class="title">企业信息</div>
        <div class="form">
          <el-form ref="formRef" label-width="100px" :model="addForm" :rules="addRules">
            <el-form-item label="企业名称" prop="name">
              <el-input v-model="addForm.name" />
            </el-form-item>
            <el-form-item label="法人" prop="legalPerson">
              <el-input v-model="addForm.legalPerson" />
            </el-form-item>
            <el-form-item label="注册地址" prop="registeredAddress">
              <el-input v-model="addForm.registeredAddress" />
            </el-form-item>
            <el-form-item label="所在行业" prop="industryCode">
                <el-select v-model="addForm.industryCode">
                    <el-option 
                        v-for="item in industryList" 
                        :key="item.industryCode" 
                        :value="item.industryCode"
                        :label="item.industryName"
                    />
                </el-select>
            </el-form-item>
            <el-form-item label="企业联系人" prop="contact">
              <el-input v-model="addForm.contact" />
            </el-form-item>
            <el-form-item label="联系电话" prop="contactNumber">
              <el-input v-model="addForm.contactNumber" />
            </el-form-item>
            <el-form-item label="营业执照" prop="businessLicenseUrl">
                <el-upload 
                    :http-request="onUploadRequest"
                    list-type="picture"
                    :limit="1"
                    v-model:file-list="fileList"
                    :before-upload="beforeUpload"
                    accept=".png, .jpg, .jpeg"
                    @remove="removeUpload"
                >
                    <el-button v-if="fileList.length === 0" type="primary" :icon="Upload">点击上传</el-button>
                    <el-button v-else type="success" disabled :icon="CircleCheck">已上传</el-button>
                    <template #tip>
                        <div class="el-upload__tip">
                            支持扩展名：.png .jpg .jpeg, 文件大小不得超过5M
                        </div>
                    </template>
                </el-upload>
            </el-form-item>
          </el-form>
        </div>
      </div>
    </main>
    <footer class="add-footer">
      <div class="btn-container">
        <el-button @click="onReset()">重置</el-button>
        <el-button @click="onSubmit()" type="primary" :loading="submitLoading">
            {{ submitLoading ? '提交中' : '确定' }}
        </el-button>
      </div>
    </footer>
  </div>
</template>

<style scoped lang="scss">
.add-enterprise {
  background-color: #f4f6f8;
  height: 100vh;

  .add-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    height: 64px;
    line-height: 64px;
    font-size: 16px;
    font-weight: bold;
    background-color: #fff;

    .left {
      span {
        margin-right: 4px;
      }

      .arrow {
        cursor: pointer;
      }
    }

    .right {
      text-align: right;
    }
  }

  .add-main {
    background: #f4f6f8;
    padding: 20px 130px;

    .form-container {
      background-color: #fff;

      .title {
        height: 60px;
        line-height: 60px;
        padding-left: 20px;
      }

      .form {
        margin-bottom: 20px;
        padding: 20px 65px 24px;

        .el-form {
          display: flex;
          flex-wrap: wrap;

          .el-form-item {
            width: 50%;
          }
        }
      }
    }
  }

  .add-footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    padding: 24px 50px;
    color: #000000d9;
    font-size: 14px;
    background: #fff;
    text-align: center;
  }
}
</style>